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RIS Statistics Report
by Generic RIS account 07 Mar '05

07 Mar '05

RIS Statistics Report (20050228-20050307) This report was generated at Mon Mar 7 00:15:01 UTC 2005. It analyses the BGP Routing Tables which are collected by RIS Remote Collectors at different locations around the world. Check http://www.ris.ripe.net/weekly-report/ for more info. o Prefix Distribution RIS rrc00 rrc01 rrc02 rrc03 rrc04 rrc05 rrc06 rrc07 rrc10 rrc11 rrc12 rrc14 APNIC 30517 30336 29036 154 29505 28536 29312 29434 27639 28804 25359 29150 29341 ARIN 62704 62231 61114 414 62045 60926 61913 62091 59222 60948 55781 61181 61664 LACNIC 6919 6903 6884 667 6900 6474 6919 6900 6205 6856 6566 6884 6884 RIPE NCC 30559 25842 25534 6554 29890 24335 26017 25226 23881 25253 19753 26018 25148 OLD 35243 33157 31858 1103 34833 32099 32727 32637 30345 31821 28444 32093 32486 IANA 3803 3724 3630 637 3794 3620 3629 3681 3470 3610 3155 3711 3623 RFC1918 19 8 3 0 7 6 0 0 0 0 0 0 1 OTHER 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTAL 169764 162201 158059 9529 166974 155996 160517 159969 150762 157292 139058 159037 159147 AS number distributions wrt RIR and single-homed/multi-homed. o ASes per RIR region RIS rrc00 rrc01 rrc02 rrc03 rrc04 rrc05 rrc06 rrc07 rrc10 rrc11 rrc12 rrc14 ARIN 10727 10704 10602 266 10673 10612 10677 10590 10385 10579 9838 10611 10650 APNIC 2195 2184 2168 16 2188 2123 2178 2163 2138 2161 1809 2172 2171 RIPE NCC 6392 6373 6369 2465 6381 6236 6371 6339 6048 6355 5144 6374 6348 LACNIC 105 105 100 8 104 104 105 103 95 100 92 100 102 IANA 1 1 1 0 1 1 1 1 1 1 1 1 1 Private 58 39 15 6 24 18 22 11 24 12 5 20 20 Others 1 1 1 0 1 1 1 1 1 1 0 1 1 Total 19479 19407 19256 2761 19372 19095 19355 19208 18692 19209 16889 19279 19293 o Number of single-homed ASes. RIS rrc00 rrc01 rrc02 rrc03 rrc04 rrc05 rrc06 rrc07 rrc10 rrc11 rrc12 rrc14 ARIN 3186 3382 4357 170 3533 4559 4276 6426 4433 4968 5036 4142 6117 APNIC 606 679 857 13 691 830 801 1256 892 1052 865 891 993 RIPE NCC 1689 2045 2487 1470 1935 2508 2138 3715 2334 2428 2430 2180 3346 LACNIC 48 50 55 6 49 60 55 69 50 53 56 53 67 IANA 1 1 1 0 1 1 1 1 1 1 1 1 1 Private 50 31 9 3 18 12 16 9 19 6 4 14 18 Others 0 0 0 0 0 1 1 1 1 1 0 1 1 Total 5580 6188 7766 1662 6227 7971 7288 11477 7730 8509 8392 7282 10543 o Number of multi-homed ASes. RIS rrc00 rrc01 rrc02 rrc03 rrc04 rrc05 rrc06 rrc07 rrc10 rrc11 rrc12 rrc14 ARIN 7541 7322 6245 96 7140 6053 6401 4164 5952 5611 4802 6469 4533 APNIC 1589 1505 1311 3 1497 1293 1377 907 1246 1109 944 1281 1178 RIPE NCC 4703 4328 3882 995 4446 3728 4233 2624 3714 3927 2714 4194 3002 LACNIC 57 55 45 2 55 44 50 34 45 47 36 47 35 IANA 0 0 0 0 0 0 0 0 0 0 0 0 0 Private 8 8 6 3 6 6 6 2 5 6 1 6 2 Others 1 1 1 0 1 0 0 0 0 0 0 0 0 Total 13899 13219 11490 1099 13145 11124 12067 7731 10962 10700 8497 11997 8750 IANA : AS65535 Others: AS65535 Distribution of AS number wrt Leaf, Transit. RIS rrc00 rrc01 rrc02 rrc03 rrc04 rrc05 rrc06 rrc07 rrc10 rrc11 rrc12 rrc14 Leaf 16122 16181 16180 2028 16131 16053 16192 16469 15730 16204 14201 16157 16386 Transit 3235 3104 2958 497 3125 2917 3055 2646 2786 2901 2386 3010 2804 Transit-only 122 122 118 236 116 125 108 93 176 104 302 112 103 Total 19479 19407 19256 2761 19372 19095 19355 19208 18692 19209 16889 19279 19293 o Average ASPATH length. RIS rrc00 rrc01 rrc02 rrc03 rrc04 rrc05 rrc06 rrc07 rrc10 rrc11 rrc12 rrc14 Avg 6.10 6.01 5.86 5.08 6.20 6.22 5.81 6.04 6.52 5.69 6.17 6.03 5.84 Std 2.52 2.41 2.43 2.67 2.55 2.57 2.56 2.29 2.49 2.28 2.23 2.60 2.76 o List of hot-spots during the week. Prefix Origin AS Number of updates 202.64.40.0/24 2706 496316 202.64.49.0/24 2706 492897 202.64.159.0/24 2706 346918 193.73.62.0/24 6730 277522 216.243.234.0/23 10970 274299 194.107.24.0/24 31152 162813 209.114.254.0/24 14359 156129 219.64.224.0/23 4755 142985 207.168.184.0/24 32832 142370 167.94.0.0/16 22413 115486 Total number of RIS BGP peering sessions: 488

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Heads up: Long AS-sets announced in the next few days
by Lorenzo Colitti 03 Mar '05

03 Mar '05

Hi, as announced to the RIPE routing working group mailing list [1] and elsewhere, over the next few days the Computer Networks research group at Roma Tre University, in collaboration with the RIPE NCC RIS project, will be performing experiments involving announcements with large AS-sets in the AS-path. We are doing this to test innovative network discovery methodologies we developed to allow ISPs to determine how their prefixes are seen by the rest of the Internet. The announcements will be for prefixes 84.205.73.0/24 and 84.205.89.0/24 and will originate in AS12654. We have been performing similar experiments over IPv6, in collaboration with the NAMEX internet exchange, since December 2004 with no ill effects; furthermore, our announcements are standard BGP, so conformant implementations should be able to process them, and very long AS-sets have already been observed in the past (e.g. [2], [3]). However, we want to be careful to avoid router bugs on legacy devices, old firmware versions and the like, so we are first sending out test announcements with progressively longer AS-sets. Should you encounter a problem with these advertisements, please let us know and we will withdraw them. The proposed timetable of the test announcements is as follows. 2005-03-04: 14:00 UTC: 10-element AS-set 14:30 UTC: withdrawal 16:00 UTC: 25-element AS-set 16:30 UTC: withdrawal and, if there are no problems: 2005-03-07: 14:00 UTC: 50-element AS-set 14:30 UTC: withdrawal 16:00 UTC: 100-element AS-set 16:30 UTC: withdrawal Note: For reference, the AS-sets already observed in [2] and [3] contained 123 and 124 ASes respectively. For questions/comments, please contact compunet(a)dia.uniroma3.it or lorenzo(a)ripe.net. Regards, Lorenzo Colitti On behalf of the Roma Tre Computer Networks Research group [1] http://www.ripe.net/ripe/maillists/archives/routing-wg/2005/msg00021.html [2] http://www.ripe.net/projects/ris/Talks/0101_RIPE38_AA/sld003.html [3] http://www.ripe.net/maillists/ncc-archives/ris-users/2002/msg00044.html

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RE: Heads up: Long AS-sets announced in the next few days
by Hallgren, Michael 02 Mar '05

02 Mar '05

Idem 6453. Thanks ;) mh > -----Message d'origine----- > De : James A. T. Rice [mailto:james_r-ripelist@jump.org.uk] > Envoyé : mercredi 2 mars 2005 13:38 > À : Lorenzo Colitti > Cc : Gert Doering; nanog(a)merit.edu; routing-wg(a)ripe.net; > ris-users(a)ripe.net; compunet(a)dia.uniroma3.it > Objet : Re: Heads up: Long AS-sets announced in the next few days > > > This seems to suggest that you are just picking ASns at > random to inject > into the paths, and that you don't have a set of ASs which > you have the > assignees permission to use. > > In which case please keep AS8330, AS8550, and AS8943 out of your > experiments too. > > Using not yet allocated ASns out of RIPEs asn-blocks would > have been more > sensible, IMHO. > > Regards > James > > On Wed, 2 Mar 2005, Lorenzo Colitti wrote: > > > Gert Doering wrote: > >>> 2005-03-04: > >>> 14:00 UTC: 10-element AS-set > >>> 14:30 UTC: withdrawal > >>> 16:00 UTC: 25-element AS-set > >>> 16:30 UTC: withdrawal > >> > >> Please do not announce AS-sets that contain 5539. We are > not part of > >> your experiment, and we don't want to see our AS appear in > other people's > >> router error messages. > > > > Ok, no problem: we will not include AS 5539 in any of the > AS-sets we > > announce. > > > > > > Regards, > > Lorenzo > > > > > > -- > Internal Virus Database is out-of-date. > Checked by AVG Anti-Virus. > Version: 7.0.300 / Virus Database: 266.4.0 - Release Date: 2005-02-22 > > -- Internal Virus Database is out-of-date. Checked by AVG Anti-Virus. Version: 7.0.300 / Virus Database: 266.4.0 - Release Date: 2005-02-22

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RIS Statistics Report
by Generic RIS account 28 Feb '05

28 Feb '05

RIS Statistics Report (20050221-20050228) This report was generated at Mon Feb 28 00:15:01 UTC 2005. It analyses the BGP Routing Tables which are collected by RIS Remote Collectors at different locations around the world. Check http://www.ris.ripe.net/weekly-report/ for more info. o Prefix Distribution RIS rrc00 rrc01 rrc02 rrc03 rrc04 rrc05 rrc06 rrc07 rrc10 rrc11 rrc12 rrc14 APNIC 29959 29696 28518 149 29249 28911 29038 29433 25095 19716 12969 29168 28858 ARIN 67202 65823 58685 453 62368 61849 62123 62171 54443 29983 18925 62543 61609 LACNIC 8309 7266 7181 1286 8287 7266 7264 7266 6943 4674 3421 7249 7180 RIPE NCC 28287 25502 23014 5914 27034 25432 25964 25148 22455 13879 15503 26411 24929 OLD 34539 33607 30740 1213 33923 33092 32690 33024 28347 16532 10822 32798 32751 IANA 4599 3749 3320 496 4471 3587 3511 3590 3016 2003 1947 3548 3486 RFC1918 13 5 0 0 5 5 0 0 0 0 0 4 0 OTHER 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTAL 172908 165648 151458 9511 165337 160142 160590 160632 140299 86787 63587 161721 158813 AS number distributions wrt RIR and single-homed/multi-homed. o ASes per RIR region RIS rrc00 rrc01 rrc02 rrc03 rrc04 rrc05 rrc06 rrc07 rrc10 rrc11 rrc12 rrc14 ARIN 10714 10679 10269 251 10659 10666 10607 10582 9741 6943 4979 10593 10639 APNIC 2199 2185 2161 18 2195 2181 2181 2163 2037 1658 1173 2175 2163 RIPE NCC 6373 6344 5962 2302 6361 6344 6346 6315 5781 4413 4762 6354 6324 LACNIC 102 102 95 9 101 102 100 100 92 70 47 97 101 IANA 2 2 2 1 2 2 2 2 2 2 2 2 2 Private 57 36 14 3 30 21 20 16 29 13 10 22 24 Others 1 1 1 0 1 1 1 1 1 1 1 1 1 Total 19448 19349 18504 2584 19349 19317 19257 19179 17683 13100 10974 19244 19254 o Number of single-homed ASes. RIS rrc00 rrc01 rrc02 rrc03 rrc04 rrc05 rrc06 rrc07 rrc10 rrc11 rrc12 rrc14 ARIN 3204 3502 4722 156 3535 4362 5443 6301 4676 3381 2445 4282 6284 APNIC 622 725 864 14 744 882 1045 1123 964 780 535 921 961 RIPE NCC 1757 2226 2263 1394 1950 2503 2598 3633 2299 1758 2168 2407 3577 LACNIC 45 47 49 8 46 56 58 63 51 37 23 49 66 IANA 1 1 1 0 1 1 1 1 1 1 2 1 2 Private 44 25 9 0 21 14 14 10 23 9 8 15 18 Others 0 0 1 0 0 0 0 1 1 1 1 0 0 Total 5673 6526 7909 1572 6297 7818 9159 11132 8015 5967 5182 7675 10908 o Number of multi-homed ASes. RIS rrc00 rrc01 rrc02 rrc03 rrc04 rrc05 rrc06 rrc07 rrc10 rrc11 rrc12 rrc14 ARIN 7510 7177 5547 95 7124 6304 5164 4281 5065 3562 2534 6311 4355 APNIC 1577 1460 1297 4 1451 1299 1136 1040 1073 878 638 1254 1202 RIPE NCC 4616 4118 3699 908 4411 3841 3748 2682 3482 2655 2594 3947 2747 LACNIC 57 55 46 1 55 46 42 37 41 33 24 48 35 IANA 1 1 1 1 1 1 1 1 1 1 0 1 0 Private 13 11 5 3 9 7 6 6 6 4 2 7 6 Others 1 1 0 0 1 1 1 0 0 0 0 1 1 Total 13775 12823 10595 1012 13052 11499 10098 8047 9668 7133 5792 11569 8346 IANA : AS64001 AS40439 Others: AS65535 Distribution of AS number wrt Leaf, Transit. RIS rrc00 rrc01 rrc02 rrc03 rrc04 rrc05 rrc06 rrc07 rrc10 rrc11 rrc12 rrc14 Leaf 16093 16153 15456 1904 16111 16239 16175 16408 14824 10539 8617 16136 16387 Transit 3224 3070 2861 459 3108 2973 2964 2674 2620 2076 1868 2992 2768 Transit-only 131 126 187 221 130 105 118 97 239 485 489 116 99 Total 19448 19349 18504 2584 19349 19317 19257 19179 17683 13100 10974 19244 19254 o Average ASPATH length. RIS rrc00 rrc01 rrc02 rrc03 rrc04 rrc05 rrc06 rrc07 rrc10 rrc11 rrc12 rrc14 Avg 6.20 6.21 5.98 5.00 6.23 6.20 6.09 6.14 6.49 6.11 6.41 6.19 5.82 Std 2.57 2.46 2.60 2.58 2.57 2.57 2.70 2.32 2.53 2.41 2.55 2.69 3.07 o List of hot-spots during the week. Prefix Origin AS Number of updates 202.64.49.0/24 2706 526481 202.64.40.0/24 2706 449929 202.64.159.0/24 2706 415364 216.243.234.0/23 10970 298131 193.73.62.0/24 6730 279769 219.64.224.0/23 4755 239623 202.43.173.0/24 4832 226672 209.114.254.0/24 14359 218845 194.190.8.0/24 2878 118576 198.76.141.0/24 21617 98054 Total number of RIS BGP peering sessions: 482

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"AS-set stuffing" experiments using RIS beacons
by Lorenzo Colitti 25 Feb '05

25 Feb '05

[Apologies for duplicate emails] Dear colleagues, In the next few days, the beacon prefixes 84.205.73.0/24 and 84.205.89.0/24 will be used by researchers at the Computer Networks research group at Roma Tre University, in collaboration with the RIPE NCC New Projects Group, to perform studies on network topology discovery. The objective of the experiments is to investigate new methodologies for topology discovery and experimental mechanisms for deducing the routing policies of ISP's, the quality of their connectivity, and more general properties of interdomain topology. The experiments will involve announcing AS-sets of varying lengths behind AS 12654 and are initially scheduled for the last week of February and the first week of March. For further information, or for questions and comments, please contact compunet(a)dia.uniroma3.it or lorenzo(a)ripe.net. On behalf of the Roma Tre Computer Networks research group and the RIPE NCC New Projects group. Regards, Lorenzo Colitti

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Announcement: Changes to RIS Routing Beacons
by James Aldridge 25 Feb '05

25 Feb '05

[Apologies for duplicate messages] The RIPE Routing Information Service has made some alterations to our BGP Routing Beacon announcements. The main changes (since 3 February 2005) are: * Beacon prefixes now come from a new, larger address range 84.205.64.0/19 (instead of 195.80.224.0/20); * We now announce an "anchor prefix" corresponding to each beacon; * For each beacon and anchor prefix there is a "pingable" target at the first address in the range (beaconNN.ris.ripe.net, anchorNN.ris.ripe.net). All prefixes announced by the RIS (AS12654) are listed in the AS12654:RS-RIS 'route-set' and individual 'route' objects in the RIPE Database and are described in more detail at http://www.ripe.net/projects/ris/docs/beaconlist.html RIS peers should set any maximum prefix limit to at least the number of entries listed in the route-set (although it is unlikely that any one RRC will ever advertise more than a small subset of these prefixes). We would also like our peers to treat these prefixes in the same way that they would a customer's prefix and announce them to their other peers and upstream providers. If you have any questions, please contact the RIS team at ris(a)ripe.net. Regards, The RIPE NCC RIS Team

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RIS Statistics Report
by Generic RIS account 21 Feb '05

21 Feb '05

RIS Statistics Report (20050214-20050221) This report was generated at Mon Feb 21 00:15:01 UTC 2005. It analyses the BGP Routing Tables which are collected by RIS Remote Collectors at different locations around the world. Check http://www.ris.ripe.net/weekly-report/ for more info. o Prefix Distribution RIS rrc00 rrc01 rrc02 rrc03 rrc04 rrc05 rrc06 rrc07 rrc10 rrc11 rrc12 rrc14 APNIC 29891 29686 27310 163 29390 29121 20240 29655 29181 28596 16816 29024 1629 ARIN 62710 61745 37973 501 62343 61362 27173 61667 61612 60375 25147 61634 1172 LACNIC 6971 6955 5784 774 6949 6954 4527 6949 6936 6920 3672 6936 484 RIPE NCC 27022 25762 22349 5590 26376 25418 18278 25134 25806 25221 14987 26155 750 OLD 33997 33296 21541 678 33663 32987 16789 32682 32573 31825 12829 32693 850 IANA 3600 3519 2671 521 3566 3471 2273 3459 3399 3362 1992 3457 112 RFC1918 16 13 0 0 2 10 0 0 0 0 0 1 0 OTHER 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTAL 164207 160976 117628 8227 162289 159323 89280 159546 159507 156299 75443 159900 4997 AS number distributions wrt RIR and single-homed/multi-homed. o ASes per RIR region RIS rrc00 rrc01 rrc02 rrc03 rrc04 rrc05 rrc06 rrc07 rrc10 rrc11 rrc12 rrc14 ARIN 10690 10665 7929 254 10642 10634 6459 10567 10554 10543 5684 10580 475 APNIC 2184 2171 2122 22 2179 2170 1751 2154 2154 2147 1588 2162 391 RIPE NCC 6358 6334 5741 2146 6344 6328 5195 6297 6319 6317 4590 6338 520 LACNIC 100 100 83 10 99 99 78 98 95 95 55 94 6 IANA 1 1 0 0 1 1 0 1 1 1 0 1 0 Private 52 36 15 2 25 21 17 11 26 9 9 21 8 Others 1 1 1 0 1 1 1 1 1 1 0 1 0 Total 19386 19308 15891 2434 19291 19254 13501 19129 19150 19113 11926 19197 1400 o Number of single-homed ASes. RIS rrc00 rrc01 rrc02 rrc03 rrc04 rrc05 rrc06 rrc07 rrc10 rrc11 rrc12 rrc14 ARIN 3146 3586 3317 162 3465 4799 2371 6450 4098 5001 2883 4027 292 APNIC 626 715 887 18 696 842 692 1195 772 1011 798 779 240 RIPE NCC 1756 2179 2160 1347 1998 2766 1773 3581 2307 2504 2108 2222 319 LACNIC 46 48 43 9 52 56 37 63 49 55 30 52 6 IANA 1 1 0 0 1 1 0 1 1 1 0 1 0 Private 37 26 9 1 18 14 11 8 21 5 7 15 7 Others 1 1 1 0 1 1 1 1 1 1 0 1 0 Total 5613 6556 6417 1537 6231 8479 4885 11299 7249 8578 5826 7097 864 o Number of multi-homed ASes. RIS rrc00 rrc01 rrc02 rrc03 rrc04 rrc05 rrc06 rrc07 rrc10 rrc11 rrc12 rrc14 ARIN 7544 7079 4612 92 7177 5835 4088 4117 6456 5542 2801 6553 183 APNIC 1558 1456 1235 4 1483 1328 1059 959 1382 1136 790 1383 151 RIPE NCC 4602 4155 3581 799 4346 3562 3422 2716 4012 3813 2482 4116 201 LACNIC 54 52 40 1 47 43 41 35 46 40 25 42 0 IANA 0 0 0 0 0 0 0 0 0 0 0 0 0 Private 15 10 6 1 7 7 6 3 5 4 2 6 1 Others 0 0 0 0 0 0 0 0 0 0 0 0 0 Total 13773 12752 9474 897 13060 10775 8616 7830 11901 10535 6100 12100 536 IANA : AS65535 Others: AS65535 Distribution of AS number wrt Leaf, Transit. RIS rrc00 rrc01 rrc02 rrc03 rrc04 rrc05 rrc06 rrc07 rrc10 rrc11 rrc12 rrc14 Leaf 16054 16143 13008 1801 16066 16243 10681 16395 16123 16147 9523 16094 994 Transit 3207 3048 2610 430 3111 2909 2413 2643 2921 2867 1937 2990 283 Transit-only 125 117 273 203 114 102 407 91 106 99 466 113 123 Total 19386 19308 15891 2434 19291 19254 13501 19129 19150 19113 11926 19197 1400 o Average ASPATH length. RIS rrc00 rrc01 rrc02 rrc03 rrc04 rrc05 rrc06 rrc07 rrc10 rrc11 rrc12 rrc14 Avg 6.10 6.09 6.05 4.98 6.18 6.19 6.23 6.11 6.18 5.63 6.26 5.95 7.98 Std 2.53 2.48 2.63 2.56 2.54 2.55 2.67 2.30 2.48 2.26 2.56 2.50 5.14 o List of hot-spots during the week. Prefix Origin AS Number of updates 202.64.40.0/24 2706 553785 202.64.159.0/24 2706 538822 202.64.49.0/24 2706 536733 202.43.173.0/24 4832 334008 216.243.234.0/23 10970 278135 193.73.62.0/24 6730 256494 219.64.224.0/23 4755 237671 209.114.254.0/24 14359 224156 194.190.8.0/24 2878 125247 198.76.141.0/24 21617 78596 Total number of RIS BGP peering sessions: 469

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Re: About the BGP peering sessions.
by lanwang＠memphis.edu 17 Feb '05

17 Feb '05

Hi Shivani, > > I had a question regarding the nature of the BGP peering sessions of > the RRCs. Is there any place I can find accurate information about the > way the different RRCs maintain their peering sessions; as in how many > of the sessions are multi-hop BGP sessions and how many are direct > link sessions etc? > I was wondering about this since, there has been a paper (see below) > published in 2002 that said that most of the RRCs peering sessions > were multi-hop eBGP sessions and as a result the BGP data collected > here cannnot be an accurate refelction of what goes on the actual > Internet/backbone routers. > The above is an inaccurate summary of our paper. In the paper, we specifically mentioned that we used RRC00's data and all the BGP sessions at RRC00 used multi-hop peering. So what we concluded is that data from multi-hop peerings should be carefully sanitized to remove those BGP updates associated with the instability of the monitoring session (in this case, it was the session instability caused by the worm attack). Lan > "Observation and Analysis of BGP Behavior under Stress", Proceedings > of the Second ACM > SIGCOMM Internet Measurement Workshop (IMW '02), pp. 183-195, Nov. > 2002 > Any inputs that I can get regarding this will be very helpful. > > Shivani. > >

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RIS Statistics Report
by Generic RIS account 16 Feb '05

16 Feb '05

RIS Statistics Report (20050207-20050214) This report was generated at Mon Feb 14 00:15:01 UTC 2005. It analyses the BGP Routing Tables which are collected by RIS Remote Collectors at different locations around the world. Check http://www.ris.ripe.net/weekly-report/ for more info. o Prefix Distribution RIS rrc00 rrc01 rrc02 rrc03 rrc04 rrc05 rrc06 rrc07 rrc10 rrc11 rrc12 rrc14 APNIC 29643 29456 28826 183 28905 28643 29087 29178 28906 28153 28323 28787 8309 ARIN 65577 64834 64471 650 65169 64357 65001 64507 64480 63453 63586 63470 5503 LACNIC 8557 8541 6757 1340 7345 8539 8552 8541 6758 6741 6741 6735 509 RIPE NCC 28341 26854 26428 5972 26938 25598 26437 25414 26068 23873 25442 26350 2995 OLD 33721 33076 32152 1291 33406 32724 32820 32711 32244 31451 31977 32162 3051 IANA 3406 3314 3217 445 3337 3280 3216 3271 3229 2957 3187 3221 298 RFC1918 35 11 1 0 11 4 7 0 19 0 0 0 0 OTHER 0 0 0 0 0 0 0 0 0 0 0 0 0 TOTAL 169280 166086 161852 9881 165111 163145 165120 163622 161704 156628 159256 160725 20665 AS number distributions wrt RIR and single-homed/multi-homed. o ASes per RIR region RIS rrc00 rrc01 rrc02 rrc03 rrc04 rrc05 rrc06 rrc07 rrc10 rrc11 rrc12 rrc14 ARIN 10670 10650 10553 292 10620 10629 10635 10548 10528 10497 10521 10540 1562 APNIC 2187 2181 2158 18 2179 2173 2167 2157 2149 2147 2147 2161 1109 RIPE NCC 6333 6307 6307 2298 6311 6303 6312 6278 6292 5952 6292 6303 869 LACNIC 102 102 96 11 99 101 102 99 96 97 96 95 7 IANA 1 1 1 0 1 1 1 1 1 1 1 1 0 Private 43 30 20 2 29 18 25 14 26 12 15 20 0 Others 0 0 0 0 0 0 0 0 0 0 0 0 0 Total 19336 19271 19135 2621 19239 19225 19242 19097 19092 18706 19072 19120 3547 o Number of single-homed ASes. RIS rrc00 rrc01 rrc02 rrc03 rrc04 rrc05 rrc06 rrc07 rrc10 rrc11 rrc12 rrc14 ARIN 3119 3400 4443 186 3556 4252 4124 6487 4435 5592 4630 4070 1281 APNIC 641 703 811 16 738 866 776 1154 827 1105 942 893 907 RIPE NCC 1733 2125 2598 1466 2060 2594 2344 3679 2342 2520 2683 2373 718 LACNIC 46 48 51 10 46 53 52 66 53 55 53 52 7 IANA 1 1 1 0 1 1 1 1 1 1 1 1 0 Private 28 18 10 0 19 11 14 9 16 6 9 11 0 Others 0 0 0 0 0 0 0 0 0 0 0 0 0 Total 5568 6295 7914 1678 6420 7777 7311 11396 7674 9279 8318 7400 2913 o Number of multi-homed ASes. RIS rrc00 rrc01 rrc02 rrc03 rrc04 rrc05 rrc06 rrc07 rrc10 rrc11 rrc12 rrc14 ARIN 7551 7250 6110 106 7064 6377 6511 4061 6093 4905 5891 6470 281 APNIC 1546 1478 1347 2 1441 1307 1391 1003 1322 1042 1205 1268 202 RIPE NCC 4600 4182 3709 832 4251 3709 3968 2599 3950 3432 3609 3930 151 LACNIC 56 54 45 1 53 48 50 33 43 42 43 43 0 IANA 0 0 0 0 0 0 0 0 0 0 0 0 0 Private 15 12 10 2 10 7 11 5 10 6 6 9 0 Others 0 0 0 0 0 0 0 0 0 0 0 0 0 Total 13768 12976 11221 943 12819 11448 11931 7701 11418 9427 10754 11720 634 IANA : AS40439 Distribution of AS number wrt Leaf, Transit. RIS rrc00 rrc01 rrc02 rrc03 rrc04 rrc05 rrc06 rrc07 rrc10 rrc11 rrc12 rrc14 Leaf 15997 16084 16071 1983 16069 16192 16093 16389 16105 15792 16181 16069 3055 Transit 3213 3070 2949 411 3058 2936 3035 2621 2884 2796 2805 2949 432 Transit-only 126 117 115 227 112 97 114 87 103 118 86 102 60 Total 19336 19271 19135 2621 19239 19225 19242 19097 19092 18706 19072 19120 3547 o Average ASPATH length. RIS rrc00 rrc01 rrc02 rrc03 rrc04 rrc05 rrc06 rrc07 rrc10 rrc11 rrc12 rrc14 Avg 5.97 5.92 5.88 4.91 5.92 5.99 5.91 6.01 6.24 5.76 5.73 5.82 4.43 Std 2.55 2.48 2.69 2.51 2.56 2.51 2.62 2.28 2.52 2.35 2.12 2.51 2.22 Can not connect to DB rrc14 Total number of RIS BGP peering sessions: 468

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About the BGP peering sessions.
by Shivani Joshi 16 Feb '05

16 Feb '05

Hi, I am a new member on this list. I had a question regarding the nature of the BGP peering sessions of the RRCs. Is there any place I can find accurate information about the way the different RRCs maintain their peering sessions; as in how many of the sessions are multi-hop BGP sessions and how many are direct link sessions etc? I was wondering about this since, there has been a paper (see below) published in 2002 that said that most of the RRCs peering sessions were multi-hop eBGP sessions and as a result the BGP data collected here cannnot be an accurate refelction of what goes on the actual Internet/backbone routers. "Observation and Analysis of BGP Behavior under Stress", Proceedings of the Second ACM SIGCOMM Internet Measurement Workshop (IMW '02), pp. 183-195, Nov. 2002 Any inputs that I can get regarding this will be very helpful. Shivani.

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